Share Options January 29th 2010

Immunodiagnostic Systems Holdings PLC (“the Company”), a leading producer of diagnostic testing kits, announces that on 29 January 2010, 33,361 ordinary shares of 2p each in the Company (the “Ordinary Shares”) were allotted in a board meeting to satisfy an exercise of options.
Additionally, at the same board meeting 26,648 Ordinary Shares were allotted to satisfy options exercised under a SAYE scheme. In aggregate 60,009 Ordinary Shares have been allotted and application will be made at the earliest practicable opportunity for admission of the new ordinary shares to trading on AIM.